Using OLED technology (organic LED) a worldwide artwork from and with the inhabitants of seven metropolises will create 7C7E in 2011 for the period of six months. In seven cities OLED screens are put up on lively places. The faces of people standing in front of the OLED screen are taped by a camera. This way, seven emotions are extracted interpreting facial gestures. The extracted emotion is reflected by showing on screen the already recorded faces of people from other cities. If the person changes its facial gesture, it will be automatically realized and communicated by instantly showing other faces - always according to the persons actual emotion.